Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1989-10-18
1991-10-01
Hille, Rolf
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 54, 359 49, G02F 113
Patent
active
050527835
ABSTRACT:
In a liquid crystal image display apparatus, an image of pixels of a liquid crystal display panel are projected onto a projection surface. The apparatus includes a light source, the liquid crystal display panel, microlens arrays provided respectively at a side of the liquid crystal display panel facing the light source and at another side thereof facing the projection surface, and a condenser lens provided between the light source and the microlens array located at the light source side of the display panel. The microlens arrays include a plurality of microlenses provided in positions corresponding to the plurality of pixels of the liquid crystal display panel, and pitches of the microlenses of the microlens array at the light source side are set to be larger than pitches of the pixels, while the pitches of the microlenses of the microlens array at the projection surface side are set to be smaller than those of the pixels.
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Hille Rolf
Ho Tan
Sharp Kabushiki Kaisha
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